The Moorish Castle, or Castelo dos Mouros, is a hilltop fortress in the Serra de Sintra, above Sintra’s historic centre and close to Pena Palace. Its stone ramparts follow the rocky ridge, with towers and high viewpoints looking over the town, surrounding hills and, on clear days, the Atlantic. The castle began as a defensive stronghold during Muslim rule on the Iberian Peninsula; today, you can walk along its walls and explore the ruins. The climb is steep, so wear sturdy shoes and bring water.
A fortress above Sintra
The Moorish Castle occupies a high ridge in the Serra de Sintra, opposite Pena Palace and above the historic centre. Its position gave defenders a broad view across the surrounding territory and routes towards Lisbon. The walls follow the ridge’s uneven shape, winding around exposed granite and rocky outcrops rather than forming a regular enclosure.
The fortress was established during Muslim rule on the Iberian Peninsula. Accounts place its origins in the 8th or 9th century, while other descriptions date the fortification to the 10th century. It was built to protect Sintra and the area around it. The setting makes that purpose easy to understand: the steep slopes and commanding views provided a vantage point over both land and sea.
Walls, towers and viewpoints
The main experience is outdoors. There is no palace interior to tour; the surviving remains are the stone fortifications, towers and battlements. You can follow the walls along the ridge and climb to higher points for views across Sintra, including Pena Palace and the National Palace. On clear days, the outlook reaches towards the Atlantic.
The route passes over uneven ground and rises and falls with the rocky terrain. The exposed position also means some sections have steep drops nearby. Take care at the higher viewpoints, and allow time to explore at a comfortable pace. The walk is a good fit if you enjoy ruins and open-air sightseeing; it is less suited to anyone looking for furnished rooms or an easy, level visit.
From Muslim rule to the Portuguese crown
The castle changed hands during the Christian reconquest of Portugal. The Norwegian king Sigurd the Crusader is reported to have taken it in 1108, but Portuguese forces under Afonso Henriques captured it in 1147. As the need to shelter the local population within its walls declined, the fortress lost its strategic role and was abandoned.
An earthquake in the 18th century caused severe damage. In the 19th century, King Ferdinand II restored the castle as part of his work on the Pena estate. The fortifications passed into the Portuguese Crown’s hands after Ferdinand’s death, when his widow, Elise, sold the castle and the Park and Palace of Pena. Today, the ruins remain a reminder of the site’s military purpose and the successive powers that controlled it.
Getting there and planning your visit
The castle sits close to Pena Palace, and the two can be combined in one visit. The walk between their entrances takes roughly 5 to 15 minutes, depending on the route described. The entrance is on Estrada da Pena, on the road shared with access to the palace. From Sintra, visitors can reach the hill by foot, car or Scotturb bus 434; walking uphill is a strenuous option, so use transport if you do not want the climb.
Allow around one to two hours for the castle itself. Comfortable footwear is useful on the steep paths, and you should carry water because there are no refreshment shops nearby. Tickets can be bought in advance, which is recommended. The castle has a wheelchair-accessible entrance and parking, though the uphill, uneven setting is important to consider when planning how much of the site to explore.
FAQ
How long do you need at the Moorish Castle?
Allow about one to two hours to explore the ruins and walk along the walls.
Can you go inside the Moorish Castle?
There is no furnished castle interior to visit. The site is made up of ruins, walls, towers and outdoor paths.
How do you get to the Moorish Castle from Sintra?
You can walk, drive or take Scotturb bus 434. The uphill walk is steep, so consider transport if you want to avoid the climb.
Is the Moorish Castle near Pena Palace?
Yes. The entrances are a short walk apart, with estimates ranging from about 5 to 15 minutes.
